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/**
* $Id: mxStencilShape.js,v 1.10 2012-07-16 10:22:44 gaudenz Exp $
* Copyright (c) 2006-2010, JGraph Ltd
*/
/**
* Class: mxStencilShape
*
* Implements a shape based on a <mxStencil>.
*
* Constructor: mxStencilShape
*
* Constructs a new generic shape.
*/
function mxStencilShape(stencil)
{
this.stencil = stencil;
};
/**
* Extends mxShape.
*/
mxStencilShape.prototype = new mxShape();
mxStencilShape.prototype.constructor = mxStencilShape;
/**
* Variable: mixedModeHtml
*
* Always prefers VML in mixed mode for stencil shapes. Default is false.
*/
mxStencilShape.prototype.mixedModeHtml = false;
/**
* Variable: preferModeHtml
*
* Always prefers VML in prefer HTML mode for stencil shapes. Default is false.
*/
mxStencilShape.prototype.preferModeHtml = false;
/**
* Variable: stencil
*
* Holds the <mxStencil> that defines the shape.
*/
mxStencilShape.prototype.stencil = null;
/**
* Variable: state
*
* Holds the <mxCellState> associated with this shape.
*/
mxStencilShape.prototype.state = null;
/**
* Variable: vmlScale
*
* Renders VML with a scale of 4.
*/
mxStencilShape.prototype.vmlScale = 4;
/**
* Function: apply
*
* Extends <mxShape> apply to keep a reference to the <mxCellState>.
*
* Parameters:
*
* state - <mxCellState> of the corresponding cell.
*/
mxStencilShape.prototype.apply = function(state)
{
this.state = state;
mxShape.prototype.apply.apply(this, arguments);
};
/**
* Function: createSvg
*
* Creates and returns the SVG node(s) to represent this shape.
*/
mxStencilShape.prototype.createSvg = function()
{
var node = document.createElementNS(mxConstants.NS_SVG, 'g');
this.configureSvgShape(node);
return node;
};
/**
* Function: configureHtmlShape
*
* Overrides method to set the overflow style to visible.
*/
mxStencilShape.prototype.configureHtmlShape = function(node)
{
mxShape.prototype.configureHtmlShape.apply(this, arguments);
if (!mxUtils.isVml(node))
{
node.style.overflow = 'visible';
}
};
/**
* Function: createVml
*
* Creates and returns the VML node to represent this shape.
*/
mxStencilShape.prototype.createVml = function()
{
var name = (document.documentMode == 8) ? 'div' : 'v:group';
var node = document.createElement(name);
this.configureTransparentBackground(node);
node.style.position = 'absolute';
return node;
};
/**
* Function: configureVmlShape
*
* Configures the specified VML node by applying the current color,
* bounds, shadow, opacity etc.
*/
mxStencilShape.prototype.configureVmlShape = function(node)
{
// do nothing
};
/**
* Function: redraw
*
* Creates and returns the SVG node(s) to represent this shape.
*/
mxStencilShape.prototype.redraw = function()
{
this.updateBoundingBox();
if (this.dialect == mxConstants.DIALECT_SVG)
{
this.redrawShape();
}
else
{
this.node.style.visibility = 'hidden';
this.redrawShape();
this.node.style.visibility = 'visible';
}
};
/**
* Function: redrawShape
*
* Updates the SVG or VML shape.
*/
mxStencilShape.prototype.redrawShape = function()
{
// LATER: Update existing DOM nodes to improve repaint performance
if (this.dialect != mxConstants.DIALECT_SVG)
{
this.node.style.left = Math.round(this.bounds.x) + 'px';
this.node.style.top = Math.round(this.bounds.y) + 'px';
var w = Math.round(this.bounds.width);
var h = Math.round(this.bounds.height);
this.node.style.width = w + 'px';
this.node.style.height = h + 'px';
var node = this.node;
// Workaround for VML rendering bug in IE8 standards mode where all VML must be
// parsed via assigning the innerHTML of the parent HTML node to keep all event
// handlers referencing node and support rotation via v:group parent element.
if (this.node.nodeName == 'DIV')
{
node = document.createElement('v:group');
node.style.position = 'absolute';
node.style.left = '0px';
node.style.top = '0px';
node.style.width = w + 'px';
node.style.height = h + 'px';
}
else
{
node.innerHTML = '';
}
if (mxUtils.isVml(node))
{
var s = (document.documentMode != 8) ? this.vmlScale : 1;
node.coordsize = (w * s) + ',' + (h * s);
}
this.stencil.renderDom(this, this.bounds, node);
if(this.node != node)
{
// Forces parsing in IE8 standards mode
this.node.innerHTML = node.outerHTML;
}
}
else
{
while (this.node.firstChild != null)
{
this.node.removeChild(this.node.firstChild);
}
this.stencil.renderDom(this, this.bounds, this.node);
}
};
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